whitney



5 Sheets-Sheet 1.

Patented Sept. 28,1897.

(No Model.) 5 Sheets--Sheet 2;.

H. M. WHITNEY. PLOURING MACHINE.

910.590,939. `Patented Sept. 28,1897.

(No Model.) 5 Sheets-Sheet 3.

H. M. WHITNEY. PLOURING MACHINE.

No. 590,939. Panentedsept. 28,199?.

f 6'2 ml (No Model.) 5 Sheets -Sheet 4.

H. M. WHITNEY. FLOURING MACHINE.

No. 590,939. Patented Sept. 28,1897e e t "Z5/'f' 1 we: I'

.5 sheets-s119995.

(No Modek) H. M. WHITNEY.

FLOURING MACHINE.

Patented Sept. 28, 1897.

fT/ffw @www @di ls :as co. mcraumo.. wnsmnc llrurnn `rares `ArnNr rrrcn.

IIUGII M. IVIIITNEY, OF ST. IlOUISpMISSOURI, ASSIGNOR TO THE IVI-IITNEY MANUFACTURING COMPANY, OF SAME PLACE.

.FLOURING-IVIACHINE.

SPECIFICATION forming part of Letters Patent No. 590,939, dated September 28, 1897. Application filed January `4., 1897. Serial No. 617,969. (No model.)

To ctZZ whom it may concern,.-

Be it known that I, HUGH M. VHITNEY, of the city of St. Louis, State of Missouri, have invented certain new and useful Improvementsin 1 `louring-l\Iachines, of which the fol-` lowing is a full, clear, and exact description, reference being had to the accompanying drawings, forming a part hereof.

My invention relates to flouring-machines, 1

1o and especially to machines for hulling and reducing grain preparatory to flour; and itl consists in the novel construction, combination, and arrangement of parts, hereinafter` shown, described, and claimed.

Figure lis a side elevation of my improved flouring-machine and looking in the direction indicated by the arrow 1 in Fig. 2. Fig. 2 is a top plan view of the machine shown in Fig. l

1, one of the driving-shafts being broken 2o away to economize space. Fig. 3 is a vertical sectional view taken approximately on the line 3 3 of Fig. 2 and lookingin the direction indicated by the arrows. Fig. 4 is a vertical sectional view of the roll-shifting mechanism and taken approximately on the line 4 4 of Figs. 6 and 8, parts being broken away to economize space. Fig. 5 is a horizontal sectional view of one of the rings usedin theY roll-shifting mechanism and shown in Figs. j

Fig. 6 is a top plan view of the parts 4and 6. shown in the central portion of Fig. 4, the

shafts being broken away to economize space. 5

shaft and taken approximately on theline 9 9 of Fig. 8, parts being removed. Fig. 10 is a horizontal sectional view th rough the crankshaft shown in Fig. 9 and taken approximately on the line 10 10 of Figs. 8 and 9 and looking in the direction indicated by the arrows. Fig. 11 is a view in elevation of the 5o oiling device which I use in connection with the crank-shaft shown in Fig. i). Fig. l2 isa space.

view in perspective of the bell-crank lever used for operating the roll-shiftingmechanism. Fig. 13 is a top plan view of the casting which carries and operates the concave. Fig. 14 is, airearelevation of the casting shown in Fig. 13. Fig. 15 is an end elevation of the casting shown in Figs. 13 and 14 and looking in the direction i-ndicated by the arrow 15. Fig. 16 is a transverse sectional view taken 6o approximately on the line 16v 16 of Fig. 14. Fig. 17 is a transverse sectional View taken approximately on the line17 17 of Fig. 14. Fig. 18 is a transverse sectional view taken approximately on the line 18 18 of Fig. 14. 65 Fig. 19 is a vertical transverse sectional view taken approximately on the line 19 19 of Fig. 2, parts being broken away to economize Fig. 2Q is a vertical longitudinal sectional view taken approximately on the line 7o 2O 2O of Fig. 19.

In the construction of a flouring-machine yin accordance with the princi ples of my invention I employ a hopper-shaped base or frame 21. The grinding-rolls 22 are mounted 75 above the base 2l, and the.. spindles of said rollers operatein the adjustable bearings 23. The bearings 23 areconstructed as shown in detail in Figs. 19 and 20. The top plate 24 "is formed integral with rthe base 21, and a 8o dovetailed recess 25 isformed .from the upper face of said platepand extending transversely of the machine-that is, transversely of the grinding-rolls. rlhe triangular block 26 rests uponA the upper face of the plate 24, and a dovetail 27 extends downwardly from said block 26 and slides in therecess 25,-thus forming asliding connection between the block 26 and the plate 24. An elongated opening 28 is formed through the plate 24 with its lowest 9o dimension in a direction transversely of the machine, and said opening communicates with the recess 25. 'The block 29 is placed with its upper surface in contact with the lower surface of the plate 24, and the screw. 95 threaded bolt 30 extends upwardly from the center of said block through the opening 28 and is screw-seated in the bottom of the triangular block 26. The bolt 30 forms a stop to limit the motion of the block 26 relative to roo the plate 24. The upper surface 3l of the triangular block 26 is upon an angle of about thirty degrees relative to the horizontal, and

a recess 32 is formed in said inclined surface 31 at approximately its center and extending longitudinally of said block-that is, transversely of the machine.. The bearing-block 33 has an inclined lower face 34, corresponding to the upper face of the block 26, and a lug 35 extends downwardly from said face 34 into the recess 32. In the outer end of the block 33 is formed a vertical opening 36, which opening is elongated transversely of the inachine, and a bolt 37 extends upwardly from the outer end of the block 26 through said opening 36, thus forming a stop to limit the motion of the block 33 relative to the block 26. A washer 38 is placed upon the bolt 437 and rests upon the upper face of the block 33, and a nut 39 is screw-seated upon the upper end of said bolt, thus forming means of setting the block in a desired position relative to the block 26 by tightening said nut 39. An arin 49 extends downwardly from the outer end of the block 33, and the lower end of saidV arm is bifurcated by the slot 41. The bolt 42 has its point screw-seated in a horizontal position in the outer end of the block 26 and in position to operate in the slot 41. A washer 43 is placed upon the bolt 42 and against its head and against the outer face of the arrn 40. A collar 44 is rigidly fixed upon the bolt 42 and in such a position that it will engage the inner face of the arm as required to allow said bolt 42 to `operate freely in said slot 41. By the manipulation of the b olt 42 the position of the block 33 may be accurately adjusted relative to the block 26.

In the upper face of the block 33 is formed the lower portion of the bearing in which the spindle of the grinding rollers 22 operate. The cap 45 forms the upper part of said bearing and is secured in position by the bolts 46 and 47. The bushing 48 is placed in the bearing thus formed in the ordinary manner. The shaft 49 is mounted in bearings in the end pieces of the base 21 near the upper sides of said pieces and in position parallel with the grinding-rollers 22. An arm 50 is fixed upon said shaft at a convenient point intermediate of said end pieces.

rlhe double eccentrics 51 (shown in Fig. 7) are mounted one upon each end of the shaft 49 outside of and near to the base. The double eccentric 5l consists of two circular portions 52 and 53, offset relative to each other and formed integral, or, if preferred, said circular portionsv niay be formed independently of each other.

The eccentric-ring 54 (shown in section in Fig. 5) is placed upon the circular portion 53, as shown in Figs. 4 and 6, and a similar ring 55 is placed upon the circular portion 52. A circular arm 56 extends from the ring 54 and has the screw-threaded aperture or recess 57 formed from its outer face. A siinilararrn 58 is attached to the ring 55. A rod 59 has one of its ends screw-threaded and seated in the arm 56, as shown in Fig. 4, and upon the opposite end of said rod from said arni is a globe-shaped head 60. A similar rod 61, having a similar head, is attached to the arrn 58. The rod 62 is screw-threaded upon its inner end and operates horizontally through a screw-threaded aperture in the block 29, as shown in Fig. 19. Ahand-wheel 63 is placed upon the screw-threaded portion of the rod 62, inside of the block 29, and operates as a jam-nut against the inner face of said block 29 to hold said rod 62 in a desired position relative to said block. The extreme inner end of the rod 62 has the enlarged screwthreaded portion 64, in the end face of which is a circular concavity to receive approximately one-half of the head 60. The cap is placed upon the rod 59 before said rod is placed in the arni 56, and the opening in said cap is of such a size as will allow the head 60 to pass into said cap, but not through said cap, as shown in Fig. 4, and said cap is interiorly screw-threaded at the large end of its opening and is screw-seated upon the enlarged portion 64 of the rod 62, thus forming a ball-and-socket connection between the rod 62 and the rod 59. The jam-nut 66 is screwseated upon the portion 64 and against the end ofthe cap 65, as required to hold said cap adj ustably in the desired position. The rod 67 is connected to the head of the rod 61 in a manner similar to that described with reference to the rod 62. A lug 68 extends outwardly from the upper portion of the base 21, and a bearing is formed horizontally through said lug as required to support the outer end of the rod 62 and allow said rod to slide through said lug, and a hand-wheel 69 is fixed upon the outer end of said rod 62 for operating said rod. A lug 70 supports the rod 67 and corresponds to the lug 68, and a hand-wheel 71 is mounted upon the outer end of the rod 67 and corresponds to the hand- Wheel 69. By the manipulation of the handwheels 69 and 7l the position of the blocks 26 may be accurately adjusted relative to the base 21.

Aconnecting-rod 72 is attached to the free end of the arrn 50 and extends downwardly at an angle of about thirtyfive degrees through the opening 73 in the base 21 and to a point some distance outside of said base. A post 74 is attached to the base 21, adjacent the opening 73, and a bell-crank lever 75 (shown in Fig. l2) is pivotally connected to the outer end of said post by means of the 1pin'76. The lower arin 77 of the bell-crank lever 75 is pivotally connected to the outer end of the connecting-rod 72 by means of the pins 78. rlhe upperarin 79 extends upwardly outside of the base 21, and a lug 8O projects inwardly from said arrn to engage the base 2l when said lever is in its locked position, as shown-in Fig. l. Above the lug 8O the arrn 79 is bent outwardly, and to its extreme upper end is attached an operating-handle 81.

The parts constituting the roll-shifting mechanism are so adjusted that when the IOC IIO

IIS

bell-crank lever is in its locked position, as shown in Fig. 1, the grinding-rolls are in their operative position relative to the concaves. When it is desired for any reason to throw the grinding-rolls away from the concaves, the operator grasps the handle 31 and throws the bell-crank lever downwardly, as indicated by dotted lines in Fig. 3. This operation rotates the shaft 19 and operates the eccentrics carried by said shaft to throw the rods 59 and 61 outwardly, thus sliding the blocks 29 outwardly, and thereby moving the bearings 23 outwardly and ,moving the grinding-rolls 22 away from the concaves. XVhile each of the bearings 23 is independently adjustable by means of the construction shown in Figs. 19 and 20, all of the bearings operate simultaneously by the operation of the bell-crank lever. The bell-crank lever and its connections are not intended as an adjusting device, but rather as a device for throwing the grinding-rollers into and out of operation.

Extending upwardly from the end pieces of the base 21 are the posts 82 and 83,'and a square or rectangular open-ended box 84 extends longitudinally of the machine approximately half-way between the grinding-rolls 22 and is supported by said posts. i The posts 82 and S3 extend to points somewhat above the upper side of the box 84. Between the lower ends of the posts S2 and 83 are posts S5,which form strengthening-ribs to support the lower wall of the box S4, as' shown in Fig. 8. The posts S2 and 83 are substantially alike, and lugs S6 extend outwardly Vand upwardly from said posts substantially on a line with the lower side of the box 84. The lugs S7 extend outwardly and downwardly from the upper ends of said posts and in con junction with the corresponding lugs S6 form dovetailed recesses in which the concave-carriers 88 operate. The blocks 89 are placed against the under surface of the lugs 87 and are held in position by the lag-screws 90.

the concave-carriers may be removed from the recesses in which they operate laterally and without the necessity of bringing them out endwise.

The concave-carriers 88 are constructed as shown in Figs. 13 to 1S, inclusive, and consist of the end portions 91, which end portions are in the form of a dovetail in cross-section, as shown in Fig. 1G, and operate within the dovetailed recesses formed by the lugs 86 and 87. The intermediate portion 92 of the concave-carriers is substantially concaved in cross-section, as shown in Fig. 1S, and its lower edge turns outwardly and upwardly, thus forming the hooks 93. Extending from corresponding ends of the concave-carriers are arms 94, which arms are turned toward each other, as shown in Fig. 2, and the free ends of said arms are bifurcated7 thus forming the ears 95 and 99, and vertically-aimed bearings 97 are formed through said ears. The con- 4caves 98 are placed in position against the Vhen theV blocks S9 are removed from their position,

concaved outer faces of the concave-carriers, with their lower edges resting upon the hooks 93. The plates 99 are in the form of a channel-bar and are placed in position, with their lower flanges engaging the upper edges of the concaves 9S and their upper flanges engaging the upper edges ofthe concave-carriers, and said plates are held adjustably in position by means of the lag-screws 100, thus forming clamps to hold the concaves in position relative to the concave-carriers. The pitmanrods 101 are pivotally attached to the concavecarriers by means of the pins 102, passing through the bearings 97 and through the ends of said pitman-rods. The pitman-rods 101 extend through the box 84, as shown in dotted lines in Fig. 2, and the ends of said rods opposite the bearings 97 are formedbearings which engage and are operated by the double-crank shaft 103, as shown in Fig. 9. The double-crank shaft 103 is turned from a straight cylindrical shaft, a cross-section of which is indicated by the circle 104 in Fig. 19. The bore 105 is formed over the upper end of said shaft and at its axial center, and the upper end 106 of said bore is countersunk to form an oil-cup. Y

The oiling device 107 (shown in Fig. 11) is inserted in the bore 105, and said oiling de- Vice consists of the rod 10S, which is substantially the same length as the bore 105 and considerably smaller than said bore in diameter. The lower end of the rod 10S is screwsubstantially of such diameter as that it will fit closely within the bore 105, and the lower half of the rod 10S is wound with candle-wicking 110, as shown in dotted lines in Fig. 11, or other absorbent material. After the rod 10S with its attachments is inserted in the bore 105 oil is poured into the cup 106 and allowed to run down around the rod 108 and into the wicking 110. The cap 111 is screwseated upon the upper end of the rod 108 and covers the upper end of the shaft 103 and closes the oil-cup 106. The shaft 103 is turned down to form the crank 112, which crank is eccentric to the axial center of said shaft, and an opening 113 is formed horizontally in said crank and communicates with the bore 105, thus allowing the oil within the bore 105 to pass outwardly through the opening 113 and keep said crank oiled.

The crank 11-1 is formed upon the shaft 103 a short distance below the crank 112 and is eccentric to the axial center of the shaft in the opposite direction from thecrank 112, and an opening 115 is formed horizontally in said crank and communicates with the bore 105 for the purpose of allowing oil to pass outwardly through said opening 115 and lubricate the crank 114i. A split box or bearing 116 is formed in the end of one of the pitmanrods 101 opposite the bearing 97, and said split bearingis placed upon the crank 112. A similar bearing 117 is formed in the end of the other one of Athe pitm an-rods 101 and is placed IOO IIO

upon the crank 11a. An arm 118 extends outwardly and upwardly from one end oi' the box 84, and a vertical bearing 110 is formed at the upper end' of said arm. An arm 120 extends outwardly from'the base 21, and a vertical bearing 121 is formed in the outer end of said arm in vertical alinement with the bearing 119. The shaft 103 is mounted in the bearings 119 and 121, and a collar 122 is iixed upon said shaft 103 above the bearing 121, and a similar collar 123 is lixed upon said shaft below the bearing 121 to hold said shaft in position and from endwise movement in said bearings. The rotation of the shaft 103 reciprocates the concaves 98 relative to the grinding-rolls 22. The shaft 103 may be driven by the belt-pulley 124, as shown in Fig. 1, or it may be driven by the beveled gears 125 and 126, as shown in Fig. S, or the pitman-rods 101 may be reciprocated in any Suitable manner.

4 One of the grinding-rolls is driven by the belt-pulley 127, attached to its spindle and outside of the bearings of said roll, and the other one of the grinding-rolls is driven by a similar pulley (not shown) attached at the opposite end of the machine from the pulley shown, as indicated by the lines broken away in Fig. 2.

The operation of my im proved machine will be obvious to those fainiliarwth the art and need not be repeated.

I claiml. In a grinding-machine, a suitable frame having dovetailed recesses in its sides, concave-carriers slidingly mounted in said dovetailed recesses, concaves detachably connected to and carried by said concave-carriers, pitman-rods attached to corresponding ends of said concave-carriers and extending back of said concave-carriers to the opposite end of the machine, and means of operating said pitman-rods whereby said concave-carriers are reciprocated, substantially as specified.

2. In a grinding-machine, a suitable frame having dovetailed recesses in its sides, concave-carriers slidingly mounted in said dovetailed recesses, concaves detachably connected to and carried by said concave-carriers, pitman-rods attached to corresponding ends of said concave-carriers and extending back of said concave-carriers to the opposite end of the machine, a double-crankshaft mounted in vertical bearings at said opposite end of the machine, to the cranks of which the free ends of said pitman-.rods are attached, and means of rotating said crank-shaft, thus operating said pitman-rods and reciprocating said concaves, substantially as-specified.

3. In a flouring-machine, grinding-rollers mounted in adjustable bearings whereby said rollers may be adjusted in any desired direction, an eccentric-shaft mounted in a position parallel with said grinding-rollers, connections between said adjustable bearings and said eccentric-shaft, and means'of rotating said eccentric-shaft whereby said bearings are operated simultaneously to move said rollers into and out of their operative positions, substantially as specified.

' 4. In a 'louring-machine, grinding-rollers mounted in adjustable bearings whereby said grinding-rollers may be adjusted in any desired direction; each of said bearings consisting of a block mounted to slide in a horizontal position and having an inclined upper face, a second block mounted to slide upon said inclined face and carrying the bearings in which said grinding-rollers operate, an arm projecting downwardly from one end ofA said second block and having a bifurcated lower end, a bolt operating in said bifurcated lower end and screw-seated in the first-mentioned block, shoulders upon said bolt upon opposite sides of said arm whereby the manipulation of said bolt will slide said second block upon said inclined face, a vertical transverselyelongated aperture formed in said second block, a bolt extending upwardly from the' in which said grinding-rollers operate, means of sliding said second block upon said inclined face and holding said block in the d'esired position relative to said first block, a horizontal plate supporting said first-mentioned block, a vertical transversely-elongated aperture through said plate and under said block, a third block slidingly mounted under said plat-e, a bolt connecting said firstmentioned block with the last-mentioned block and means of sliding said last-mentioned block, substantially as specified.

6. In a iiouring-machine, grinding-rollers mounted in adjustable bearings whereby said grinding-rollers may be adjusted in any desired direction; each of said bearings consisting of a block mounted to slide in a horizontal position and having an inclined upper face7 a second block mounted to slide upon said inclined face and carrying the bearings in which said grinding-rollers operate, means of sliding said second block upon said inclined face and holding said block in the desired position relative to said iirst block, a horizontal plate supporting said first-mentioned block, a vertical transversely-elongated aperture through said plate and under said block, a third block slidingly mounted under said plate, a bolt connecting said firstmentioned block with the last mentioned block, a rod screw-seated in a horizontal po- ICO IIO

sition through said last-mentioned block, means of operating said rod, and means of holding said rod from endwise motion, substantially as specified. v

7. ln a ilouring-inachine, the combination with a vertical shaft, having a bore formed through its upper end and openings leading from said bore to the bearing` portions of said shaft, of a rod to be inserted in said bore, absorbent packing on said rod, and a cap on the lower end of said rod to hold said packin g in position7 substantially as specified.

S. In a iouring-machine, grinding-rolle1s mounted in adjustable bearings whereby said grinding-rollers may be adjusted in any desired direction; each of said bearings consistin g of a block mounted to slide in a horizontal position and having` an inclined upper face, a second block mounted to 'slide upon said inclined face and carrying the bearings in which said grinding-rollers operate, means of sliding said second block upon said inclined face and holding said block inthe desired position relative to said first block, a horizontal plate supporting said irst-mentioned block, a vertical transversely-e101] gated which are sorew-seated through said last-` mentioned blocks, thus forming connections between said adgustable bearings, and means of rotating said eocentrio-shaft whereby said bearings are operated simultaneously to move said rollers into and out of their operative positions, substantially Vas specified.

In testimony whereof I affix my signature in presence of two witnesses.

. nnen M. WHITNEY.

lVitnesses EDWARD E. LoNGAN, S. G. WELLS.

Sfr. 

